Answer
a. 1s has a spherical shape.
b. 2p has two lobes.
c. 5s has a spherical shape.
Work Step by Step
You can find the answers to this question on pages 124 and 125, topic 'Shapes of Orbitals'.
$s$ orbitals are mostly spherical.
Each one of the three $p$ orbitals has two lobes.